The shunting Soviet locomotive TGM-4, created on the basis of the TGMZ, is an updated modification with an improved diesel power unit. The motor is a device with a cylindrical arrangement in a row , has water cooling and a refrigeration system of the supplied air mixture. The refrigerant is circulated by a turbine, and start-up is via an electric starter.
The hydraulic transmission of the locomotive can be used not only for maneuvers, but also in train mode. Each position has a reverse. Another distinguishing feature is the PK-35 compressor. It is activated by means of an additional shaft, which distributes power using a special coupling. There is the possibility of mounting an analogue under the brand name PC-3.5 or VU.
Traction parameters
The TGM-4 diesel locomotive has traction parameters by which it is possible to determine the workload of the processed train, speed and travel time. Shunting locomotives of this type are used in two main operating modes, taking into account the limiting traction values and minimum loads corresponding to the power consumption and auxiliary resources of the locomotive.
A number of components and parts are responsible for traction characteristics:
- driver's cab;
- the body under which the main tanks and batteries are located;
- two-machine unit;
- diesel engine cleaner;
- fan;
- cooling shutters;
- compressor;
- exhaust motor system;
- engine room;
- oil cooler and main air compartments.
The movement is carried out through the interaction of the driveshaft axial gears and hydraulic transmission. The main parts are placed on the frame of the TGM-4 locomotive. Among other important details, it is worth noting:
- a frame;
- radiator sections;
- automatic coupler;
- electrical equipment;
- fine and coarse filters for oil and fuel;
- Remote Control;
- electro-pneumatic valves;
- hand brake;
- oil pump.
Diesel locomotive TGM-4: technical specifications
The following are the technical plan parameters specific to the locomotive under consideration:
- Type of locomotive - shunting option.
- The power of the diesel installation is 750 horsepower.
- The axis parameters are 2/2.
- The official weight is 80 tons.
- The load transmitted to the rails by a wheelset is 196 kN.
- Estimated shunting / train speed - 27/55 km / h.
- Track - 1520 mm.
- The minimum radius of fitting on the curves is 40 m.
- The number of axles is 4.
- The number of trolleys is two.
- The diameter of the wheel is 1050 mm.
- Axle boxes - roller-bearing type.
- The fuel supply is 3300 liters.
- The capacity of the water / oil system is 380/300 l.
- The stock of sand is 0.9 tons.
- Length / width / height - 12.6 / 3.14 / 4.6 m.
- Cart Base - 2.1 m.
Power point
The diesel engine of the TGM-4 locomotive complies with GOST 4393-82 and is marked 6CHN-21. It is equipped with six cylinders, and each diameter is 210 mm. During the course of the 210-mm piston, the compression ratio is 13, 5. The cylinders work in the sequence 1/5/3/6/2/4.
The crankshaft has a left-hand direction with respect to power take-off flanges. The maximum rotational speed of the crankshaft is 1,400 rpm. This action is controlled by a step-by-step pneumatic system with eight positions, which is mounted directly on the diesel engine. The motor is started using an electric starter.
Fuel and oil system
The diesel fuel consumption during operation of the TGM-4 locomotive at full power is about 158 hp.h. The mixture is supplied by a fuel pump with a capacity of 8 liters per minute. Protection is provided in the form of fine and coarse filters. The power unit is equipped with six closed nozzles. Fuel supply is carried out under pressure at a speed of 27 l / min. The pump is powered by an electric motor and has a fuel pre-filter.
The lubrication system is a circulating unit under pressure. The specific lubricant consumption is not more than 2.86 g / l per hour. The system is equipped with a gear type oil pump with a flow rate of about 60 liters of fluid per minute. There are filtering elements of coarse and fine cleaning. The pressure in the oil line at full power and an operating temperature of 75 degrees is at least 0.4 MPa. The maximum allowable outlet temperature is 95 degrees Celsius.
The brakes
The operation manual for the TGM-4 locomotive states that before each trip it is necessary to check the reliability of the brake system. In case of malfunction, maneuvers should be postponed until troubleshooting. The locomotive brake assembly includes the following mechanisms:
- Type - shoe.
- Actuating the brakes is a mechanical and pneumatic option.
- The train crane of the driver No. 394 with air distributors is equipped with an auxiliary brake No. 254.
- A hand brake that provides pressing pads on the axis in a volume of 320 kN.
- The number of axes of the air / manual unit is 4/2.
- The effectiveness of the brake cylinders is 0.38 MPa.
Cabin
Carts are attached to the frame by spring suspension, which provides good maneuverability. The engine compartment is equipped with double doors and a removable roof, which allows you to freely enter the compartment for the behavior of repair work.
The driver’s cab meets the requirements of GOST-70, has a reduced level of noise and vibration, while all the minimum requirements for sanitary standards are observed. Control and management devices are located as conveniently as possible, which makes it possible to drive a locomotive to one person. All recommended manuals for action are duplicated on the dashboard in the form of light signals.
Finally
The characteristics of the TGM-4 locomotive are discussed above. During serial production, about five thousand units of locomotives of this series were produced. Subsequent modifications of the machine were considered unprofitable, and therefore the developers began to design fundamentally new models with different parameters.
It is worth noting that all instances of the locomotive in question were successfully operated on the roads of the former Soviet Union. They are characterized by high maintainability and extremely rarely fail without the possibility of recovery. Some modifications can still be found so far, mainly on access roads.